CA1048927A - Plug for injection - Google Patents
Plug for injectionInfo
- Publication number
- CA1048927A CA1048927A CA76254645A CA254645A CA1048927A CA 1048927 A CA1048927 A CA 1048927A CA 76254645 A CA76254645 A CA 76254645A CA 254645 A CA254645 A CA 254645A CA 1048927 A CA1048927 A CA 1048927A
- Authority
- CA
- Canada
- Prior art keywords
- pipe element
- closure device
- injection
- movable part
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- KRTSDMXIXPKRQR-AATRIKPKSA-N monocrotophos Chemical compound CNC(=O)\C=C(/C)OP(=O)(OC)OC KRTSDMXIXPKRQR-AATRIKPKSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Soil Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Agronomy & Crop Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The present invention provides a closure device adapted to be secured to one end of a main injection pipe which comprises a substantially straight pipe element through which a fluid to be injected may flow; a single-acting annular power ram-like linear actuator the movable part of which is slidable in substantially coaxial relationship along the outside wall of said pipe element and at least one transversely expandable annular sealing packing member mounted in coaxial relationship about and along the outer wall of said pipe element between said movable part and stationary abutment means fixedly attached to said pipe element.
The present invention provides a closure device adapted to be secured to one end of a main injection pipe which comprises a substantially straight pipe element through which a fluid to be injected may flow; a single-acting annular power ram-like linear actuator the movable part of which is slidable in substantially coaxial relationship along the outside wall of said pipe element and at least one transversely expandable annular sealing packing member mounted in coaxial relationship about and along the outer wall of said pipe element between said movable part and stationary abutment means fixedly attached to said pipe element.
Description
10~8927 The present inventi.on relates essentially to a ground-injection or grouting closing or stopper device adapted to temp-orarily close or plug in substantially sealing relationship a bore-hole or drilling hole to enable a forced injection of a fluid under pressure and in particular injection of a plugging, choking, clogging, blocking, blinding or like grouting liquid capable of .setting or to hardening into the lower or bottom portion of said bore-hole.
In the field of civil engineering the issue of stability of the ground on which it is desired to erect a building or like construction and more particularly the problem of reinforcing or stiffening some underground areas exhibiting a number of rifts, rents or like clefts or cracks is often raised. Reinforcing of such cracked areas is achieved by carrying out one or several borings or drillings into the ground down to said area and by injecting thereinto a settable or hardenable grouting or plugging li~uid or like clogging or.choking fluid. It is however necessary to inject such a plugging or grouting liquid under pressure so that the latter may flow into and close or seal all and any cracks communicating with the lower portion of the bore-hole.
Such a forced injection therefore requires the provision at some level located slightly above:the.cracked area of a temporary closing or sealing means through which the grouting or plugging liquid under pressure will flow longitudinally and preventing the latter from rising up to .the ground surface instead of flowing int~ the cracks.
The present invention provides an injection closing device adapted to be secured at the end of a main injection pipe which comprises a substantially straight pipe section or element through which a fluid to be injec.ted may be caused to flow, a single-acting annular power ram-like linear actuator the movable part of which is axially slidable along the outside wall of said -- 1 -- ,. ,~
1~4~ '7 pipe section and at least one sidewise deformable or expandable ring-shaped sealing or packing member fitted in coaxial relation-ship about and along the outer wall of said pipe section between said movable part and a stationary stop or like abutment fixedly attached to or integral with said pipe section.
The annular actuator is connected to a source or supply of pressure fluid located at the ground surface through a separate pipe-line or duct and said pressure source for operating or feeding said actuator may be of hydraulic or pneumatic character.
The present invention will be further illustrated by way of the accompanying diagrammatic drawings in which:
- Figure 1 illustrates the use of an injection closing means according to one embodiment of the invention during the operating step of injecting a plugging or grouting settable liquid into a cracked subsoil or like substratum;
- Figure 2 is a sectional view showing the injection closure device proper drawn on a larger scale, the annular power ram-like actuator being not operated; and - Figure 3 shows the same closure device when the operating pressure fluid is filling the working chamber of said actuator.
In the accompanying drawings, the injection closure device 11 is adapted to be secured at the end of a main rigid or flexible injection pipe 12 through which the settable or hardenable plugging or grouting liquid 13 is fed into the lower portion or bottom of a bore-or like drilling hole 14. The injection closure device 11 comprises at its top or upper end a screw-threaded portion 15 to enable the connection with the pipe 12 so that said injection closure device 11 forms the terminal nipple or nozzle end of the main pipe 12. The closure device 11 comprises of a substantially straight pipe section or element 16 provided in extension of the main pipe 12 in substantially aligned 1~)489Z7 registering relationship therewi.th and inside of which the settable li~uid may flow, an annular power ram-like linear act-uator 17 and three ring-shaped sealing or packing members 18, 19 and 20. The actuator 17 is of single acting type and its movable part 2I is according to this embodiment provided by the actuator casing or body which is sl.idable in substantially coaxial relation-ship along the outside wall 22 of the pipe element 16 whereas the piston 23 of said actuator is stationary with.respect to that pipe element due to the~provisi:on of a ring-shaped abu:tment or stop means 24 thereof whi:ch co-operates with.an inner shoulder 25 of the piston 23. The movable part 21 extends downwardly beIow the working chamber 26 of the actuator in the form of a sleeve promoting the sliding motion along the outer wall 22.
Two sliding sealing joints or li~e grummets or gaskets 27. and 28 are provided between the movable part 21 and the pipe element 16 whereas another sealing joint or ring 29 provides for the fluid-tightness between the movable part 21 and the piston 23. Longit-udinally extending through the latter is a duct or passage-way 30 providing communication between the working chamber 28 of the actuator and a second pipe-line 31 connected at the ground sur-face to a pressure source 32.: The:three annular sealing or pack-ing members 18, 19 and 20 are mounted in coaxial relationship along the outer wall 22:or.the pipe element 16 between said movable part 21 and a stationary stop or abutment member 33 screwed onto the bottom portion of the pipe element 16. TheSe sealing or packing members which are sidewardly deformable or expandable under the action of the actuator 17 in the manner shown in Figure 3 are separated or spaced from each other by spacing washers 34 and 35, respectively. As clearly appearing from the drawings the various:components of the closure device 11 are.sized and designed so that its general shape at rest be substanti:ally cylindrical, and in particular the movable part 21, 1~8927 the sealing members 18, 19 and 20.at rest and th~ washers or spacers 34 and 35 have the'same diameter, and they may be inserted without any difficulty into. the:b~re'hole 14. The:sealing packing members 18, 19 and 20 consist of a prefer:ably resiliently deformable homogeneous stuffing material such as rubber for instance.
The operation of the injection closure device 11 is as follows.
. The closure dev.ice 11 is secured to the end of the main pipe 12 and the pressure source'32 is connec.ted to .the ram-like actuator 17 through a pipe-l:ine'3I. The closure'.devi.ce 11 is then inserted into the'bore-hole'14 and'moved down to a level posit-ioned slightly above the cracked area. At that time:the fluid for operating the actuator 17 is fed into the working chamber 26 and the closure device 11 as:sumes the shape shown in Figures 1 and 3. The resistance of the sealing packing members 18, 19 and 20 and.the press-ure for operating the actuator 17 are such that a perfect fluid-tightness is obtained betwe,en the closure devi.ce ll and the wall of the'drilling hole 14. The settable or hardenable'plugging li~uid 13 is then injec.ted under pressure into the cracked area through:the pipe 12 and the pipe element 16. At the end of the pro.cess, the pressure is reIeased within the actuator 17 and the closing device 11 ass'umes again its initial shape. It is then withdrawn or removed from the bore-ho.le 14. As clearly appearing from Figure 3 the provision of sereral sealing packing members separated by spacer washers between the actuator 17 and the abutment 33 enables to achieve a certain distribution of the contact areas between the closing device and the inner wall of the bore-hole 14 thereby improving the~adhesion and resistance of the closing device undergoing the thrust of the injection li~uid.
In the field of civil engineering the issue of stability of the ground on which it is desired to erect a building or like construction and more particularly the problem of reinforcing or stiffening some underground areas exhibiting a number of rifts, rents or like clefts or cracks is often raised. Reinforcing of such cracked areas is achieved by carrying out one or several borings or drillings into the ground down to said area and by injecting thereinto a settable or hardenable grouting or plugging li~uid or like clogging or.choking fluid. It is however necessary to inject such a plugging or grouting liquid under pressure so that the latter may flow into and close or seal all and any cracks communicating with the lower portion of the bore-hole.
Such a forced injection therefore requires the provision at some level located slightly above:the.cracked area of a temporary closing or sealing means through which the grouting or plugging liquid under pressure will flow longitudinally and preventing the latter from rising up to .the ground surface instead of flowing int~ the cracks.
The present invention provides an injection closing device adapted to be secured at the end of a main injection pipe which comprises a substantially straight pipe section or element through which a fluid to be injec.ted may be caused to flow, a single-acting annular power ram-like linear actuator the movable part of which is axially slidable along the outside wall of said -- 1 -- ,. ,~
1~4~ '7 pipe section and at least one sidewise deformable or expandable ring-shaped sealing or packing member fitted in coaxial relation-ship about and along the outer wall of said pipe section between said movable part and a stationary stop or like abutment fixedly attached to or integral with said pipe section.
The annular actuator is connected to a source or supply of pressure fluid located at the ground surface through a separate pipe-line or duct and said pressure source for operating or feeding said actuator may be of hydraulic or pneumatic character.
The present invention will be further illustrated by way of the accompanying diagrammatic drawings in which:
- Figure 1 illustrates the use of an injection closing means according to one embodiment of the invention during the operating step of injecting a plugging or grouting settable liquid into a cracked subsoil or like substratum;
- Figure 2 is a sectional view showing the injection closure device proper drawn on a larger scale, the annular power ram-like actuator being not operated; and - Figure 3 shows the same closure device when the operating pressure fluid is filling the working chamber of said actuator.
In the accompanying drawings, the injection closure device 11 is adapted to be secured at the end of a main rigid or flexible injection pipe 12 through which the settable or hardenable plugging or grouting liquid 13 is fed into the lower portion or bottom of a bore-or like drilling hole 14. The injection closure device 11 comprises at its top or upper end a screw-threaded portion 15 to enable the connection with the pipe 12 so that said injection closure device 11 forms the terminal nipple or nozzle end of the main pipe 12. The closure device 11 comprises of a substantially straight pipe section or element 16 provided in extension of the main pipe 12 in substantially aligned 1~)489Z7 registering relationship therewi.th and inside of which the settable li~uid may flow, an annular power ram-like linear act-uator 17 and three ring-shaped sealing or packing members 18, 19 and 20. The actuator 17 is of single acting type and its movable part 2I is according to this embodiment provided by the actuator casing or body which is sl.idable in substantially coaxial relation-ship along the outside wall 22 of the pipe element 16 whereas the piston 23 of said actuator is stationary with.respect to that pipe element due to the~provisi:on of a ring-shaped abu:tment or stop means 24 thereof whi:ch co-operates with.an inner shoulder 25 of the piston 23. The movable part 21 extends downwardly beIow the working chamber 26 of the actuator in the form of a sleeve promoting the sliding motion along the outer wall 22.
Two sliding sealing joints or li~e grummets or gaskets 27. and 28 are provided between the movable part 21 and the pipe element 16 whereas another sealing joint or ring 29 provides for the fluid-tightness between the movable part 21 and the piston 23. Longit-udinally extending through the latter is a duct or passage-way 30 providing communication between the working chamber 28 of the actuator and a second pipe-line 31 connected at the ground sur-face to a pressure source 32.: The:three annular sealing or pack-ing members 18, 19 and 20 are mounted in coaxial relationship along the outer wall 22:or.the pipe element 16 between said movable part 21 and a stationary stop or abutment member 33 screwed onto the bottom portion of the pipe element 16. TheSe sealing or packing members which are sidewardly deformable or expandable under the action of the actuator 17 in the manner shown in Figure 3 are separated or spaced from each other by spacing washers 34 and 35, respectively. As clearly appearing from the drawings the various:components of the closure device 11 are.sized and designed so that its general shape at rest be substanti:ally cylindrical, and in particular the movable part 21, 1~8927 the sealing members 18, 19 and 20.at rest and th~ washers or spacers 34 and 35 have the'same diameter, and they may be inserted without any difficulty into. the:b~re'hole 14. The:sealing packing members 18, 19 and 20 consist of a prefer:ably resiliently deformable homogeneous stuffing material such as rubber for instance.
The operation of the injection closure device 11 is as follows.
. The closure dev.ice 11 is secured to the end of the main pipe 12 and the pressure source'32 is connec.ted to .the ram-like actuator 17 through a pipe-l:ine'3I. The closure'.devi.ce 11 is then inserted into the'bore-hole'14 and'moved down to a level posit-ioned slightly above the cracked area. At that time:the fluid for operating the actuator 17 is fed into the working chamber 26 and the closure device 11 as:sumes the shape shown in Figures 1 and 3. The resistance of the sealing packing members 18, 19 and 20 and.the press-ure for operating the actuator 17 are such that a perfect fluid-tightness is obtained betwe,en the closure devi.ce ll and the wall of the'drilling hole 14. The settable or hardenable'plugging li~uid 13 is then injec.ted under pressure into the cracked area through:the pipe 12 and the pipe element 16. At the end of the pro.cess, the pressure is reIeased within the actuator 17 and the closing device 11 ass'umes again its initial shape. It is then withdrawn or removed from the bore-ho.le 14. As clearly appearing from Figure 3 the provision of sereral sealing packing members separated by spacer washers between the actuator 17 and the abutment 33 enables to achieve a certain distribution of the contact areas between the closing device and the inner wall of the bore-hole 14 thereby improving the~adhesion and resistance of the closing device undergoing the thrust of the injection li~uid.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An injection closure device adapted to be secured to an end of a main injection pipe in a ground bore, comprising a substantially straight pipe element through which a fluid to be injected may flow, a single-acting annular cylinder-like actuator having a stationary part secured to the pipe element and a movable part which is slidable in substantially coaxial relationship along the outer surface of said pipe element, a duct separate from the pipe element and adapted to supply said actuator with a pressurized fluid, and at least one transversely expandable annular sealing member mounted in coaxial relationship about and along the outer surface of the pipe element between said movable part of the actu-ator and abutment means fixedly attached or integral with said pipe element.
2. An injection closure device according to claim 1, wherein said sealing member is resiliently deformable.
3. An injection closure device according to claim 1, wherein said actuator comprises a movable body and a stationary piston rigidly connected to said pipe element.
4. An injection closure device according to claim 1, comprising a plurality of substantially like sealing members mounted between said movable part and said stationary abutment means and separated from each other by spacing washers, respectively.
5. An injection closure device according to claim 4, wherein said movable part, said sealing members in their rest condition and said spacing washers have substantially the same diameter.
6. An injection closure device according to claim 1, wherein said sealing member consists of a substantially homogeneous stuffing material.
7. An injection closure device according to claim 6, in which the material is rubber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE157274A BE830167A (en) | 1975-06-12 | 1975-06-12 | PLUG FOR INJECTIONS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1048927A true CA1048927A (en) | 1979-02-20 |
Family
ID=3842788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA76254645A Expired CA1048927A (en) | 1975-06-12 | 1976-06-11 | Plug for injection |
Country Status (13)
| Country | Link |
|---|---|
| AR (1) | AR209491A1 (en) |
| AU (1) | AU499254B2 (en) |
| BE (1) | BE830167A (en) |
| BR (1) | BR7603783A (en) |
| CA (1) | CA1048927A (en) |
| CH (1) | CH606638A5 (en) |
| DE (1) | DE2625665A1 (en) |
| ES (1) | ES449188A1 (en) |
| FR (1) | FR2314306A1 (en) |
| GB (1) | GB1537386A (en) |
| LU (1) | LU75154A1 (en) |
| YU (1) | YU144376A (en) |
| ZA (1) | ZA763062B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4791986A (en) * | 1986-09-09 | 1988-12-20 | Vallet Aldon J | Tubing hanger |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3213041C2 (en) * | 1982-04-07 | 1985-03-28 | Gkn Keller Gmbh, 6050 Offenbach | Injection device for the production of injected earth bodies for soil consolidation |
| JPS59118989A (en) * | 1982-12-13 | 1984-07-09 | 鹿島建設株式会社 | Static crushing of rock |
| SE8405656D0 (en) * | 1984-11-12 | 1984-11-12 | K Rainer Massarch | PROCEDURE AND DEVICE FOR CHANGING THE LIQUID CONTENT IN EARTH STORES |
| FR2646876B2 (en) * | 1987-02-24 | 1991-07-12 | Pajaud Pierre | PISTON BLOCKING THE WELL JUST ABOVE THE SOURCE TO ALLOW ITS CLEARING WITH THE PRESSURE (WELL BORE) |
| GB9015158D0 (en) * | 1990-07-10 | 1990-08-29 | Vasey Alan G | Borehole plug |
| FR2692620A1 (en) * | 1992-06-23 | 1993-12-24 | Geostock | Rapid shut-off device used in prodn. tube storing hydrocarbons - comprising abturator propelled by pressure into piping |
| CN110984960B (en) * | 2019-11-19 | 2023-07-18 | 四川省冶勘设计集团有限公司 | Top pressure type layered water pumping and injecting test system and method for same-diameter drilling holes |
| EP4065261A4 (en) * | 2019-11-26 | 2023-08-23 | Polymer Technologies Worldwide, Inc. | Mixing device for silt fine soil |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2370832A (en) * | 1941-08-19 | 1945-03-06 | Baker Oil Tools Inc | Removable well packer |
| US2467801A (en) * | 1946-10-26 | 1949-04-19 | Baker Oil Tools Inc | Hydraulically set well packer |
| US2694453A (en) * | 1953-06-02 | 1954-11-16 | Marcel E Longeval | Packer unit for wells |
| US2860489A (en) * | 1953-09-18 | 1958-11-18 | Lawrence E Townsend | Grouting or sealing apparatus |
| US3459261A (en) * | 1965-12-13 | 1969-08-05 | Brown Oil Tools | Pressure differential expanding means for well packers |
| US3587736A (en) * | 1970-04-09 | 1971-06-28 | Cicero C Brown | Hydraulic open hole well packer |
| US3860068A (en) * | 1973-11-01 | 1975-01-14 | Dresser Ind | Well packer zone activated valve |
-
1975
- 1975-06-12 BE BE157274A patent/BE830167A/en not_active IP Right Cessation
-
1976
- 1976-05-06 FR FR7613550A patent/FR2314306A1/en active Granted
- 1976-05-24 ZA ZA763062A patent/ZA763062B/en unknown
- 1976-05-26 AU AU14280/76A patent/AU499254B2/en not_active Expired
- 1976-05-31 CH CH677776A patent/CH606638A5/xx not_active IP Right Cessation
- 1976-06-08 DE DE19762625665 patent/DE2625665A1/en not_active Ceased
- 1976-06-11 LU LU75154A patent/LU75154A1/xx unknown
- 1976-06-11 BR BR7603783A patent/BR7603783A/en unknown
- 1976-06-11 GB GB24234/76A patent/GB1537386A/en not_active Expired
- 1976-06-11 ES ES449188A patent/ES449188A1/en not_active Expired
- 1976-06-11 AR AR263597A patent/AR209491A1/en active
- 1976-06-11 YU YU01443/76A patent/YU144376A/en unknown
- 1976-06-11 CA CA76254645A patent/CA1048927A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4791986A (en) * | 1986-09-09 | 1988-12-20 | Vallet Aldon J | Tubing hanger |
Also Published As
| Publication number | Publication date |
|---|---|
| LU75154A1 (en) | 1977-01-25 |
| YU144376A (en) | 1982-06-30 |
| FR2314306B1 (en) | 1982-07-02 |
| ES449188A1 (en) | 1977-08-16 |
| FR2314306A1 (en) | 1977-01-07 |
| BE830167A (en) | 1975-10-01 |
| AR209491A1 (en) | 1977-04-29 |
| AU499254B2 (en) | 1979-04-12 |
| DE2625665A1 (en) | 1976-12-30 |
| ZA763062B (en) | 1977-09-28 |
| BR7603783A (en) | 1977-02-08 |
| GB1537386A (en) | 1978-12-29 |
| AU1428076A (en) | 1977-12-01 |
| CH606638A5 (en) | 1978-11-15 |
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